MAX17521
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MAX17521

60V, 1A, Dual-Output, High-Efficiency, Synchronous Step-Down DC-DC Converter

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Industry's First 60V, 1A Dual Step-Down DC-DC Converter with Integrated MOSFETs

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $3.87
Features
  • Reduces External Components and Total Cost
    • No Schottky—Synchronous Operation
    • All-Ceramic Capacitors, Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4.5V to 60V Input
    • Each Output Adjustable From 0.9V to 92%VIN
    • Pin-Selectable 560kHz or 300kHz Switching Frequency
    • Independent Input Voltage Pin for Each Output
  • Reduces Power Dissipation
    • Peak Efficiency > 90%
    • PFM Mode Enables Enhanced Light-Load Efficiency
    • 1μA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup Mode Overload Protection
    • Adjustable Soft-Start Pin for Each Output
    • Built-In Output Voltage Monitoring with Active-Low RESET for Each Output
    • Adjustable EN/UVLO Threshold for Each Output
    • Monotonic Startup Into Prebiased Load
    • Overtemperature Protection
    • High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range
Additional Details
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The MAX17521 dual-output, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input. The converter can deliver up to 1A at each output. Each output is programmable from 0.9V to 92%VIN. The feedback voltage regulation accuracy over -40°C to +125°C is ±1.7%.

The MAX17521 uses peak-current-mode control. Each output can be operated in the pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control schemes.

The MAX17521 is available in a 24-pin (4mm x 5mm) TQFN package. Simulation models are available.

Applications

  • CPU, DSP, or FPGA Power
  • Distributed Supply Regulation
  • General-Purpose Point of Load
  • Industrial Control Power Supplies
Part Models 2
1ku List Price Starting From $3.87

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX17521ATG+
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MAX17521ATG+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

MAX17521EVKIT

Evaluation Kit for MAX17521

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MAX17521EVKIT

Evaluation Kit for MAX17521

Evaluation Kit for MAX17521

Features and Benefits

  • Operates from a 7V to 60V Input Supply
  • Dual-Output Voltage: 3.3V and 5V
  • Up to 1A Output Current
  • Pin-Selectable Switching Frequency
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold
  • Mode-Selection Pin for Each Output to Select Between PWM and PFM Modes
  • Adjustable Soft-Start Time for Each Output
  • Open-Drain Active-Low RESET_ Signals for Each Output
  • External Frequency Synchronization
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Detail

The MAX17521 evaluation kit (EV kit) provides a proven design to evaluate the MAX17521 dual high-efficiency, high-voltage, synchronous step-down DC-DC converter. The EV kit generates 3.3V and 5V output voltages at load currents up to 1A from a 7V to 60V input supply. The EV kit features a switching-frequency selector pin and individual mode-of-operation selector pins, enable/under-voltage-lockout (EN/UVLO) pins, programmable soft-start pins, and open-drain active-low RESET_ signals for each output.

Applications

  • CPU, DSP, or FPGA Power
  • Distributed Supply Regulation
  • General-Purpose Point of Load
  • Industrial Control Power Supplies

MAX17521EVKITE

Evaluation Kit for the MAX17521 in 5V and 3.3V Output-Voltage Application

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MAX17521EVKITE

Evaluation Kit for the MAX17521 in 5V and 3.3V Output-Voltage Application

Evaluation Kit for the MAX17521 in 5V and 3.3V Output-Voltage Application

Features and Benefits

  • Operates from a 7V to 60V Input Supply
  • Dual-Output Voltage: 5V and 3.3V
  • Up to 1A Output Current per Converter
  • 560kHz Switching Frequency
  • EN/UVLO Input, Resistor-Programmable UVLO Threshold
  • Mode Selection Jumper to Select Between PWM and PFM Modes
  • Capacitor Programmable Soft-Start Time
  • External Clock Synchronization Input
  • Open-Drain Active-Low RESET Output
  • Overcurrent Protection
  • Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR32(EN55032) Class B Conducted and Radiated Emissions

Product Detail

The MAX17521EVKITE# evaluation kit (EV kit) provides a proven design to evaluate the MAX17521 high-efficiency, high-voltage, Himalaya synchronous step-down dual DC-DC converter. The EV kit is preset to generate 5V and 3.3V output voltages, at load currents up to 1A per converter. The switching frequency of the EV kit is preset to 560kHz for optimum efficiency and component size. The EV kit features programmable enable and input undervoltage lockout (EN/UVLO), programmable soft-start (SS), open-drain status (active-low RESET) output and external clock synchronization (SYNC). The EV kit also provides good layout example, which is optimized for conducted, radiated EMI, and thermal performance. For more details about the IC Benefits and Features, refer to the MAX17521 IC data sheet.

Applications

  • CPU, DSP, or FPGA Power
  • Distributed Supply Regulation
  • General-Purpose Point of Load
  • Industrial Control Power Supplies
Tools & Simulations

Tools & Simulations 2

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